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2026-03-19 - 17:02
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4.osadl.org (updated Thu Mar 19, 2026 12:44:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
176162172102,7sleep30-21swapper/307:07:443
177882137128,6sleep10-21swapper/107:09:541
17573211173,8sleep00-21swapper/007:07:080
17648210898,7sleep20-21swapper/207:08:072
68552710,0sleep30-21swapper/309:20:183
298312640,1sleep129836-21unixbench_singl08:40:231
122962590,0sleep30-21swapper/311:50:123
314212570,0sleep00-21swapper/010:40:130
1795699290,28cyclictest0-21swapper/111:56:101
1795699281,26cyclictest0-21swapper/110:15:121
1795699281,26cyclictest0-21swapper/110:15:111
1795299281,2cyclictest10203-21perl08:55:160
1795999270,26cyclictest0-21swapper/211:08:362
1795999270,26cyclictest0-21swapper/209:45:322
1795999270,26cyclictest0-21swapper/209:12:552
1795699270,26cyclictest0-21swapper/110:41:091
1795299270,26cyclictest0-21swapper/007:45:170
1795999260,25cyclictest0-21swapper/212:28:402
1795999260,25cyclictest0-21swapper/210:31:572
1795999260,25cyclictest0-21swapper/208:15:102
17956992623,3cyclictest0-21swapper/107:46:061
17956992623,2cyclictest0-21swapper/108:22:171
1795699260,25cyclictest0-21swapper/111:50:211
1795699260,25cyclictest0-21swapper/110:47:291
1795699260,25cyclictest0-21swapper/107:43:151
17952992618,7cyclictest749-21snmpd10:15:030
17952992618,7cyclictest749-21snmpd10:15:020
17952992618,7cyclictest749-21snmpd08:42:430
17959992523,2cyclictest0-21swapper/207:24:152
1795999250,24cyclictest0-21swapper/211:13:362
17956992523,2cyclictest0-21swapper/108:02:251
17956992522,2cyclictest0-21swapper/109:13:071
17956992522,2cyclictest0-21swapper/108:35:131
17952992517,7cyclictest749-21snmpd12:33:120
17952992517,7cyclictest749-21snmpd10:54:510
17952992517,7cyclictest749-21snmpd08:36:370
1795299250,1cyclictest22709-21sshd11:55:510
17959992422,2cyclictest0-21swapper/211:35:452
17959992417,7cyclictest0-21swapper/207:12:592
1795999241,4cyclictest0-21swapper/209:00:162
17956992422,2cyclictest0-21swapper/110:23:351
17956992421,3cyclictest0-21swapper/107:26:241
1795299242,8cyclictest2071-21/usr/sbin/munin12:10:130
17952992418,5cyclictest749-21snmpd08:25:430
17952992416,7cyclictest749-21snmpd10:24:020
17952992416,7cyclictest749-21snmpd09:40:400
17952992416,7cyclictest749-21snmpd07:34:360
1795299241,1cyclictest280-21systemd-journal09:57:550
1795299240,11cyclictest10808-21/usr/sbin/munin11:20:150
17959992321,2cyclictest0-21swapper/208:57:432
1795999231,21cyclictest0-21swapper/211:46:102
1795999231,21cyclictest0-21swapper/208:14:172
1795999230,21cyclictest0-21swapper/210:00:122
17956992321,2cyclictest0-21swapper/112:38:461
17956992321,2cyclictest0-21swapper/110:03:381
17956992321,2cyclictest0-21swapper/109:51:061
17956992321,2cyclictest0-21swapper/109:35:341
17956992321,2cyclictest0-21swapper/108:56:131
17956992320,3cyclictest0-21swapper/112:17:191
17956992320,3cyclictest0-21swapper/112:12:191
17956992320,3cyclictest0-21swapper/111:44:161
17956992320,3cyclictest0-21swapper/107:39:361
17956992320,2cyclictest0-21swapper/110:59:361
17952992317,5cyclictest749-21snmpd09:13:440
17952992316,6cyclictest749-21snmpd07:36:210
17952992316,6cyclictest749-21snmpd07:19:210
17952992315,7cyclictest749-21snmpd10:35:330
17952992315,7cyclictest749-21snmpd09:06:010
17952992315,7cyclictest749-21snmpd07:52:120
17952992315,7cyclictest749-21snmpd07:22:570
1795299230,4cyclictest0-21swapper/012:04:110
1795299230,2cyclictest5400-21grep07:25:150
1795299230,14cyclictest6816-21/usr/sbin/munin09:50:150
17959992220,2cyclictest0-21swapper/208:20:432
17959992217,4cyclictest0-21swapper/209:37:042
1795999220,3cyclictest0-21swapper/210:19:482
1795999220,3cyclictest0-21swapper/210:19:472
1795999220,3cyclictest0-21swapper/207:26:422
1795999220,21cyclictest0-21swapper/209:26:102
1795999220,21cyclictest0-21swapper/209:15:162
1795999220,21cyclictest0-21swapper/208:35:262
1795999220,21cyclictest0-21swapper/208:30:452
17956992220,2cyclictest0-21swapper/111:27:351
17956992220,2cyclictest0-21swapper/110:39:411
17956992220,2cyclictest0-21swapper/108:52:161
17956992220,2cyclictest0-21swapper/108:25:461
17956992219,2cyclictest0-21swapper/108:48:171
1795699220,21cyclictest0-21swapper/112:30:301
1795699220,21cyclictest0-21swapper/111:30:121
1795699220,21cyclictest0-21swapper/107:31:541
1795699220,21cyclictest0-21swapper/107:19:451
1795699220,21cyclictest0-21swapper/107:10:091
1795299226,14cyclictest0-21swapper/011:40:150
17952992216,5cyclictest749-21snmpd10:34:230
17952992216,5cyclictest749-21snmpd09:01:220
1795299220,4cyclictest0-21swapper/011:00:330
1795299220,4cyclictest0-21swapper/008:05:160
1795299220,18cyclictest27611-21/usr/sbin/munin11:35:120
17959992119,2cyclictest0-21swapper/210:55:392
17959992119,1cyclictest25781-21cat12:30:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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